CN220785474U - Charging control system and vehicle - Google Patents

Abstract

The utility model relates to the technical field of charging, in particular to a charging control system and a vehicle, wherein the system comprises: the system comprises an alternating current charging circuit and a photovoltaic charging circuit; the alternating current charging circuit comprises a power factor correction circuit; the photovoltaic charging circuit comprises a boost circuit which multiplexes at least part of switching devices of the power factor correction circuit; the power factor correction circuit is connected with an alternating current charging port of the system, and the boost circuit is connected with a photovoltaic charging port of the system. According to the system of the utility model, the cost and the volume of the equipment can be reduced.

Description

Charging control system and vehicle

Technical Field

The utility model relates to the technical field of charging, in particular to a charging control system and a vehicle.

Background

Along with the driving of energy crisis and energy conservation and emission reduction, the electric automobile is greatly developed to become an effective way for relieving the energy crisis and environmental pollution. Automotive fuel is the subject of petroleum consumption. Automobile exhaust accounts for 10% -15% of the total carbon dioxide emission in the world. The electric automobile can reduce the emission of carbon dioxide and improve the atmospheric environment. The electric automobile charging and discharging station using the photovoltaic cell as the energy input has greater advantages. However, the photovoltaic charging control system of the current electric automobile inputs the output electric energy of the photovoltaic panel to the power battery of the automobile after passing through the booster circuit, so that the photovoltaic charging function is realized.

Disclosure of Invention

It is an object of the present utility model to provide a charge control system that reduces the cost and bulk of the device.

According to a first aspect of the present utility model, there is provided a charge control system comprising an ac charging circuit and a photovoltaic charging circuit; the alternating current charging circuit comprises a power factor correction circuit; the photovoltaic charging circuit comprises a boost circuit which multiplexes at least part of switching devices of the power factor correction circuit; the power factor correction circuit is connected with an alternating current charging port of the system, and the boost circuit is connected with a photovoltaic charging port of the system.

Optionally, the boost circuit multiplexes at least part of the inductive devices of the power factor correction circuit.

Optionally, the power factor correction circuit comprises a first bridge arm, a second bridge arm, a third bridge arm, a first inductor and a second inductor; the first end of the first inductor is connected with the bridge arm midpoint of the first bridge arm, the first end of the second inductor is connected with the bridge arm midpoint of the second bridge arm, the second ends of the first inductor and the second inductor are connected with the L-phase port of the alternating current charging port, and the bridge arm midpoint of the third bridge arm is connected with the N-phase port of the alternating current charging port.

Optionally, the boost circuit multiplexes at least part of the switching devices and at least part of the inductive devices of the power factor correction circuit, including: the boost circuit multiplexes the first inductor and the first bridge arm; or the boost circuit multiplexes the second inductor and the second bridge arm; or the boost circuit multiplexes the first inductor, the second inductor, the first bridge arm and the second bridge arm. Optionally, the positive pole of the photovoltaic charging port is connected with the second ends of the first inductor and the second inductor, and the negative pole of the photovoltaic charging port is connected with the bus of the power factor correction circuit.

Optionally, a first switch is arranged between the phase port of the alternating current charging port and the power factor correction circuit, a second switch is arranged between the boost circuit and the positive pole of the photovoltaic charging port, and a third switch is arranged on the negative pole of the photovoltaic charging port.

Optionally, the alternating current charging circuit further comprises a high-voltage primary side conversion circuit, an isolation conversion circuit and a high-voltage secondary side conversion circuit; the power factor correction circuit, the high-voltage primary side conversion circuit, the isolation conversion circuit and the high-voltage secondary side conversion circuit are sequentially connected, and the high-voltage secondary side conversion circuit is connected with a battery port of the system.

Optionally, the system is configured to implement at least one of the following operation modes under the control of the control circuit: an alternating current charging mode, corresponding to the alternating current charging mode, the first switch being closed, the second switch and the third switch being open; an inversion discharging mode, corresponding to the inversion discharging mode, wherein the first switch is closed, and the second switch and the third switch are opened; and a photovoltaic charging mode, corresponding to the photovoltaic charging mode, wherein the first switch is opened, and the second switch and the third switch are closed.

Optionally, the system further comprises a low voltage secondary side conversion circuit; the low-voltage secondary side conversion circuit is coupled with the isolation conversion circuit of the alternating-current charging circuit; the low-voltage secondary side conversion circuit is connected with a low-voltage load port of the system.

According to a second aspect of the present utility model, there is provided a vehicle comprising a power battery, an electric motor, and the charge control system as in any one of the first aspects; the power battery is connected with a battery port of the charging control system.

The utility model has the technical effects that a novel charging control system is provided, a photovoltaic charging port is connected with a boost circuit, an alternating current charging port is connected with a power factor correction circuit of the alternating current charging circuit, and a part of switching devices and a part of inductance devices of the power factor correction circuit are used as devices of the boost circuit. By the method, the boost circuit connected with the photovoltaic charging port multiplexes part of the switching devices and the inductance devices in the power factor correction circuit, so that part of device materials are saved, the cost is reduced, and the occupied volume and the brought quality of the boost circuit are reduced. The charge control system of the utility model may be applied to a vehicle.

Other features of the present utility model and its advantages will become apparent from the following detailed description of exemplary embodiments of the utility model, which proceeds with reference to the accompanying drawings.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description, serve to explain the principles of the utility model.

FIG. 1 is a block diagram of a charging system according to one embodiment;

FIG. 2 is a circuit diagram of a charging system according to one embodiment;

FIG. 3 is a circuit diagram of a power factor correction circuit according to one embodiment;

the reference numerals:

a charging system 1000;

an ac charging circuit 100; a power factor correction circuit 130; a high voltage primary side conversion circuit 140; an isolation switching circuit 120; a high voltage secondary side conversion circuit 110;

a booster circuit 400; a first inductance L1; a second inductance L2;

a first leg 1; a second leg 2; a third arm 3; low voltage secondary side conversion circuit 230.

A first switch S1; a second switch S2; a third switch S3;

Detailed Description

Various exemplary embodiments of the present utility model will now be described in detail with reference to the accompanying drawings. It should be noted that: the relative arrangement of the components and steps, numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present utility model unless it is specifically stated otherwise.

The following description of at least one exemplary embodiment is merely exemplary in nature and is in no way intended to limit the utility model, its application, or uses.

Techniques and equipment known to those of ordinary skill in the relevant art may not be discussed in detail, but should be considered part of the specification where appropriate.

In all examples shown and discussed herein, any specific values should be construed as merely illustrative, and not a limitation. Thus, other examples of exemplary embodiments may have different values.

It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further discussion thereof is necessary in subsequent figures.

Referring to fig. 1, a charge control system 1000 of an embodiment of the present disclosure is illustrated.

The utility model discloses a charge control system 1000. The system includes an alternating current charging circuit 100 and a photovoltaic charging circuit; the ac charging circuit 100 includes a power factor correction circuit 130; the photovoltaic charging circuit includes a boost circuit 400, the boost circuit 400 multiplexing at least part of the switching devices of the power factor correction circuit 130; the power factor correction circuit 130 is connected to an ac charging port of the system, and the booster circuit 400 is connected to a photovoltaic charging port of the system.

In one example, the boost circuit 400 multiplexes at least some of the inductive devices of the power factor correction circuit 130.

In one example, the boost circuit 400 multiplexes at least a portion of the switching devices and at least a portion of the inductive devices of the power factor correction circuit 130. That is, the power factor correction circuit 130 and the boost circuit 400 multiplex part of the switching devices and the inductance devices, and part of the switching devices and at least part of the inductance devices of the power factor correction circuit 130 are the same as the devices of the boost circuit 400.

The battery port of the system 1000 is for connection to a battery, the ac charging port is for connection to an external device external to the system 1000, and the photovoltaic charging port is for connection to a photovoltaic panel or other photovoltaic charging device. When the system 1000 is used in a vehicle, the battery port is connected to the power battery of the vehicle. When the system 1000 is used in a vehicle, the external device connected to the ac charging port may be a power source or powered device external to the system 1000, such as a charging post, an on-board ac powered device of the vehicle, or other vehicle.

In the case where the external device is used as a power source, the ac charging circuit 100 is used to convert ac power output from the external device into dc power and charge the power battery. In the case of the power battery as a power source, the ac charging circuit 100 is used to convert dc power output from the power battery into ac power and discharge the ac power to an external device.

In one example, the ac charging circuit may include a DCDC circuit with an electrical isolation function, for example, an isolated DCDC circuit with a transformer interposed therebetween. Or DCDC circuits without electrical isolation, such as common boost or buck circuits, etc.

In one example, the ac charging circuit 100 further includes a high voltage primary side conversion circuit 140, an isolation conversion circuit 120, and a high voltage secondary side conversion circuit 110. Specifically: the power factor correction circuit 130, the high-voltage primary side conversion circuit 140, the isolation conversion circuit 120 and the high-voltage secondary side conversion circuit 110 are sequentially connected, the power factor correction circuit 130 is connected with an alternating current charging port of the system, and the high-voltage secondary side conversion circuit 110 is connected with a battery port of the system.

In one example, as shown in fig. 2, the ac charging circuit 100 may include a power factor correction circuit 130, a high voltage primary side conversion circuit 140, an isolation conversion circuit 120, and a high voltage secondary side conversion circuit 110 connected in sequence, with the high voltage secondary side conversion circuit 110 also connected to a battery port of the system. The power factor correction circuit 130 is connected to the ac charging port, and sequentially transmits ac power inputted from the outside to the high voltage secondary side conversion circuit 110 to charge the battery, and conversely, when the battery is discharged, the high voltage secondary side conversion circuit 110 can receive dc power inputted from the battery and discharge a load outside the system 1000 through the power factor correction circuit 130. The high-voltage primary side conversion circuit 140, the isolation conversion circuit 120, and the high-voltage secondary side conversion circuit 110 are integrally formed into a DC-DC conversion circuit for adjusting the voltage of the DC power supply. The power factor correction circuit 130 has a power factor correction and ac-dc conversion function. In addition, the isolation switch 120 is used to electrically isolate the other device from the failure of the high voltage primary switch 140 or the high voltage secondary switch 110.

In one example, the power factor correction circuit 130 includes a first leg 1, a second leg 2, a third leg 3, a first inductance L1, and a second inductance L2; the first end of the first inductor L1 is connected with the bridge arm midpoint of the first bridge arm 1, the first end of the second inductor L2 is connected with the bridge arm midpoint of the second bridge arm 2, the second ends of the first inductor L1 and the second inductor L2 are connected with the L-phase port of the alternating current charging port, and the bridge arm midpoint of the third bridge arm 3 is connected with the N-phase port of the alternating current charging port.

The power factor correction circuit 110 has a power factor correction function and an ac/dc conversion function, as shown in fig. 3, the power factor correction circuit may include a first bridge arm 1, a second bridge arm 2, and a third bridge arm 3, each bridge arm may be provided with two switching tubes, one end of the first inductor L1 is connected with a midpoint of the bridge arm of the first bridge arm 1, that is, between the two switching tubes, and the other end is connected with an L-phase port of the ac charging port, that is, a fire wire port. One end of the second inductor L2 is connected with the bridge arm midpoint of the first bridge arm 2, and the other end is also connected with the L-phase port of the alternating current charging port. The midpoint of the last bridge arm in the power factor correction circuit, namely the third bridge arm 3, is connected with the N-phase port of the alternating current charging port, namely the zero line port.

In one example, the boost circuit 400 multiplexes at least a portion of the switching devices and at least a portion of the inductive devices of the power factor correction circuit 130, including: the boost circuit 400 multiplexes the first inductance L1 and the first leg 1; alternatively, the boost circuit 400 multiplexes the second inductance L2 and the second leg 2; alternatively, boost circuit 400 multiplexes first inductance L1, second inductance L2, first leg 1, and second leg 2.

That is, the booster circuit 400 multiplexes the switching device and the inductance device in the power factor correction circuit. Under the condition that the photovoltaic charging port is charged, the direct current output by the photovoltaic charging port can be boosted by utilizing the multiplexed inductance device and the switch device, and the battery is charged. The AC charging circuit realizes the original function, and when the AC charging and discharging are carried out, the multiplexing devices can also realize the functions of power factor correction and AC-DC conversion of the power factor correction circuit.

The power factor correction circuit 130, in which part of the switching devices and at least part of the inductance devices are the same devices as the boost circuit 400, may include the following three ways:

mode one: the power factor correction circuit 130 and the booster circuit 400 multiplex the first inductance L1 and the first arm 1.

Mode two: the power factor correction circuit 130 and the boost circuit 400 multiplex the second inductance L2 and the second leg 2.

Mode three: the power factor correction circuit 130 and the booster circuit 400 multiplex the first inductance L1, the second inductance L2, the first leg 1, and the second leg 2.

In some embodiments, the connection manner of the first inductor L1 and the first bridge arm 1, and the connection manner of the second inductor L2 and the second bridge arm 2 can be considered as one boost circuit 400 separately. That is, the system 1000 may directly use the first inductor L1 and the first bridge arm 1 in the power factor correction circuit as the boost circuit 400 of the photovoltaic charging port. Similarly, the system 1000 may also directly use the second inductor L2 and the second bridge arm 2 in the power factor correction circuit as the boost circuit 400 of the photovoltaic charging port. Further, because the power of each device in the system is different, under the condition that the boosting capability of the first mode and the second mode cannot meet the requirement of the photovoltaic charging port, the first inductor L1, the second inductor L2, the first bridge arm 1 and the second bridge arm 2 can be multiplexed at the same time, so that the boosting capability of the boosting circuit 400 is improved.

In this example, by the above manner, the system can realize the function of boosting the direct current output by the photovoltaic charging port by only using part of devices in the power factor correction circuit as the booster circuit 400 connected with the photovoltaic charging port without setting the booster circuit 400 for the photovoltaic charging port, thereby saving components and improving the integration of the system.

In one example, the positive electrode of the photovoltaic charging port is connected to the second ends of the first inductor L1 and the second inductor L2, and the negative electrode of the photovoltaic charging port is connected to the bus of the pfc circuit 130.

In one example, a first switch S1 is provided between the L-phase port of the ac charging port and the pfc circuit 130, a second switch S2 is provided between the boost circuit 400 and the positive electrode of the photovoltaic charging port, and a third switch S3 is provided at the negative electrode of the photovoltaic charging port.

In one example, the specific arrangement may be such that as shown in fig. 2, a first switch S1 is provided between the L-phase port of the ac charging port and the power factor correction circuit. The positive pole of the photovoltaic charging port is connected with the boost circuit 400, and because the boost circuit 400 multiplexes the switching device and the inductance device in the power factor correction circuit, in essence, the positive pole of the photovoltaic charging port is connected with the boost circuit 400, namely the positive pole of the photovoltaic charging port is connected with the second end of the first inductance or the second inductance, and a second switch S2 is arranged between the positive pole of the photovoltaic charging port and the boost circuit 400, namely a second switch S2 is arranged between the positive pole of the photovoltaic charging port and the first inductance or the second inductance. In addition, bridge arms in the power factor correction circuit are connected to the bus of the power factor correction circuit in parallel, so that the negative electrode of the photovoltaic charging port can be connected with the bus of the power factor correction circuit. And a third switch S3 is provided between the negative electrode and the bus bar.

When the system 1000 charges the battery through the photovoltaic charging port, the second switch and the third switch are closed, and the first switch is opened, at this time, the photovoltaic charging port inputs the direct current into the boost circuit 400, that is, the power factor correction circuit in the ac charging circuit, and after the boost circuit 400 boosts the voltage, the direct current continues to be input into the battery port through the high-voltage primary side conversion circuit, the isolation conversion circuit and the high-voltage secondary side conversion circuit of the ac charging circuit.

When the system 1000 charges through the ac charging port, the second switch and the third switch are opened, the first switch is closed, and at this time, the ac power input by the ac charging port is normally converted into dc power by the ac charging circuit and then output to the battery port for charging. When the system 1000 discharges through the ac charging port, the second switch and the third switch are opened, the first switch is closed, and at this time, the dc power input from the battery port is normally converted into ac power by the ac charging circuit and then output to the ac charging port for discharging.

In this example, a photovoltaic charging port is connected to the booster circuit 400, an ac charging port is connected to a power factor correction circuit of the ac charging circuit, and a part of switching devices and a part of inductance devices of the power factor correction circuit are used as devices of the booster circuit 400. In this way, the boost circuit 400 connected with the photovoltaic charging port multiplexes part of the switching devices and the inductance devices in the power factor correction circuit, so that part of device materials are saved, the cost is reduced, and the occupied volume and the brought quality of the boost circuit 400 are reduced.

In one example, the system further includes a low voltage secondary side conversion circuit 230; the low voltage secondary side conversion circuit 230 is coupled with the isolation conversion circuit 120 of the ac charging circuit 100; the low voltage secondary side conversion circuit 230 is connected to a low voltage load port of the system. In the embodiments herein, "high voltage" and "low voltage" are relative concepts and do not represent specific voltage ranges for high voltage and low voltage.

In one example, a transformer may be included in the isolated switching circuit 120. The transformer may be a three-winding magnetically integrated transformer. The high voltage primary side conversion circuit 140 may be connected to a primary side winding of the magnetically integrated transformer, and the high voltage secondary side conversion circuit 110 may be connected to a first secondary side winding of the transformer. In another example, the isolated switching circuit 120 may also be provided with a primary side resonant circuit and a secondary side resonant circuit, where the high voltage primary side switching circuit 140 is connected to the primary side winding through the primary side resonant circuit, and similarly the high voltage secondary side switching circuit 110 is connected to the first secondary side winding through the secondary side resonant circuit.

In one example, the low voltage secondary side conversion circuit 230 is coupled with the isolation conversion circuit 120, comprising: the low voltage secondary side conversion circuit 230 is connected to the second secondary side winding of the isolated conversion circuit 120.

In the prior art, a general low-voltage discharging circuit includes a low-voltage primary side conversion circuit, a low-voltage isolation conversion circuit, and a low-voltage secondary side conversion circuit 230, and the low-voltage primary side conversion circuit, the low-voltage isolation conversion circuit, and the low-voltage secondary side conversion circuit 230 are sequentially connected. The low voltage secondary side conversion circuit 230 is connected to a low voltage load port. The low-voltage discharging circuit is used for adjusting the voltage of the direct current and outputting the direct current to the low-voltage load port. The low voltage load port may be connected to a low voltage battery, or other load device, to power the low voltage of the entire vehicle when the low voltage discharge circuit is in the vehicle. Meanwhile, the low-voltage isolation conversion circuit is used for electrically isolating the low-voltage end from the high-voltage end, so that load equipment or devices of the low-voltage end cannot be affected when the high-voltage end fails.

In the system 1000 of the present embodiment, only the low-voltage secondary side circuit in the low-voltage discharge circuit may be coupled with the isolation conversion circuit 120 in the ac charging circuit 100, and no other circuit in the low-voltage power generation circuit is required. Specifically, the low voltage secondary side conversion circuit 230 may be connected to a second secondary winding of the transformer in the isolation conversion circuit 120.

In one example, the low voltage secondary side conversion circuit 230 is configured to receive the direct current input by the high voltage primary side conversion circuit 110 or the high voltage secondary side conversion circuit 110 to supply power to the low voltage load device.

For example, when the system 1000 charges the battery through the ac charging port, the power factor correction circuit, the high-voltage primary side conversion circuit 140, the isolation conversion circuit 120, and the high-voltage secondary side conversion circuit 110 connected to the ac charging port operate in this order. And converting the external alternating current into direct current, outputting the direct current to a battery port, and charging the battery. At this time, if the low-voltage load also needs to be supplied, the high-voltage primary side conversion circuit 140 may input an external ac point to the low-voltage secondary side circuit through the isolation conversion circuit 120 to supply power to the low-voltage load.

In another example, system 1000 provides power to an external high voltage load through an ac charging port, or when system 1000 only needs to power a low voltage load device. The dc power of the battery is input to the high-voltage secondary side conversion circuit 110, and the high-voltage secondary side conversion circuit 110 supplies the dc power of the battery to the low-voltage secondary side circuit through the isolation conversion circuit 120 to supply power to the low-voltage load.

In one example, a voltage regulation circuit may also be connected between the low voltage discharge circuit and the low voltage load port.

In this example, the high-voltage primary side conversion circuit 140 or the high-voltage secondary side conversion circuit 110 in the ac charging circuit 100 corresponds to the low-voltage primary side conversion circuit in the low-voltage discharging circuit in the related art. In this manner, integrating the low voltage discharge circuit with the ac charging circuit 100 reduces the devices in the system 1000, reduces the cost, and reduces the physical size of the system 1000.

It should be noted that, for different types of low voltage secondary side conversion circuits 230, the connection manner of the low voltage secondary side conversion circuit and the second secondary side winding may be different. For example, the low-voltage secondary side conversion circuit 230 is a full-wave rectification circuit to which 3 taps may be led out from both ends and the center of the second secondary winding of the transformer. If the low voltage secondary side conversion circuit 230 is a double-current rectifying circuit, only 2 taps may be led out from both ends of the second secondary side winding to be connected to the low voltage secondary side conversion circuit 230.

In one example, the system is configured to implement the following modes of operation under the control of the control circuitry: an alternating current charging mode, corresponding to the alternating current charging mode, in which the first switch S1 is closed, and the second switch S2 and the third switch S3 are opened; an inversion discharging mode, corresponding to the inversion discharging mode, wherein the first switch S1 is closed, and the second switch S2 and the third switch S3 are opened; the photovoltaic charging mode corresponds to the photovoltaic charging mode, the first switch S1 is opened, and the second switch S2 and the third switch S3 are closed.

In some embodiments, the control circuitry may issue control signals to control the operation of various circuits in the system 1000 described above, such as: the control signal output from the control circuit to the ac charging circuit 100 causes the switching device of the ac charging circuit 100 to operate. The control circuit may include a control chip, which is not particularly limited herein. Accordingly, the modes of operation for system 1000 to implement under control of the control circuitry may include a high voltage charging mode, an inverter discharging mode, and a photovoltaic charging mode.

In the high-voltage charging mode, the first switch S1 is closed, the second switch S2 and the third switch S3 are opened, and the ac charging circuit 100 is configured to convert external ac power into dc power and charge the battery. In the inverter discharge mode, the first switch S1 is closed, the second switch S2 and the third switch S3 are opened, and the ac charging circuit 100 is configured to convert dc power input from the battery into ac power and supply the ac power to the external device, as in the high voltage charge mode. In the photovoltaic charging mode, the first switch S1 is opened, the second switch S2 and the third switch S3 are closed, and part of devices of the power factor correction circuit boost the voltage input by the photovoltaic charging port and output the voltage to the battery port through other circuits in the alternating current charging circuit to charge the battery.

In some embodiments, the system 1000 further includes a low voltage secondary side conversion circuit 230, and if the system 1000 is configured with the low voltage secondary side conversion circuit 230, the operation mode of the system 1000 for implementation under control of the control circuit may further include a low voltage discharge mode in which the low voltage secondary side conversion circuit 230 is configured to output the direct current of the battery input by the ac charging circuit 100 to the low voltage load port to supply power to the low voltage load device, or output the external alternating current input by the ac charging circuit 100 to the low voltage load port to supply power to the low voltage load device.

In one example, the low voltage discharge mode may be performed simultaneously with the high voltage charge mode, the inverter discharge mode, and the photovoltaic charge mode. For example, when the low-voltage discharging mode and the high-voltage charging mode or the photovoltaic charging mode are performed simultaneously, the ac charging circuit 100 divides the external ac power into two paths by the isolation conversion circuit 120 and outputs the two paths to the high-voltage secondary side conversion circuit 110 and the low-voltage secondary side conversion circuit 230, respectively, and the high-voltage secondary side conversion circuit 110 outputs the two paths to the battery to charge the battery. The low voltage secondary side conversion circuit 230 outputs external ac power to the low voltage load port to power the low voltage load device. Alternatively, when the low-voltage discharge mode and the inverter discharge mode are performed simultaneously, the high-voltage secondary side conversion circuit 110 outputs the direct current of the battery to the high-voltage primary side conversion circuit 140 and the low-voltage secondary side conversion circuit 230 through the isolation conversion circuit 120, respectively, and the high-voltage primary side conversion circuit 140 outputs the direct current of the battery to the ac charging port through the power factor correction circuit 130 to supply power to the external device load. The low voltage secondary side conversion circuit 230 outputs the direct current of the battery to the low voltage load port to power the low voltage load device.

In one example, the ac charging circuit 100 and the booster circuit 400 may be provided on the same circuit board.

In one example, the control circuitry may also be provided on the circuit board.

According to the vehicle provided by the embodiment of the disclosure, the vehicle includes a power battery and the charge control system 1000 according to any of the embodiments described above, and the power battery is connected to a battery port of the charge control system 1000. In the case of configuring the system 1000, the vehicle can improve the integration level of the vehicle internal circuit, thereby reducing the cost.

In some embodiments, the vehicle further includes a low voltage battery connected to the low voltage load port of the charge control system 1000. By providing the system 1000, power supply to low voltage load devices configured for a vehicle is achieved.

In some embodiments, the vehicle further includes an electric motor, such as a three-phase alternating current motor, and a power battery in the vehicle may drive the electric motor to power the vehicle.

In some embodiments, for example: the system 1000 may be in a high voltage charging mode after connection with a charging post so that the charging post may charge a battery. The system 1000 may be in an inverter discharge mode after being connected to an external device such that the battery may charge the external device. The external device may be an in-vehicle air conditioner, other vehicle, or the like. When the system 1000 is not in the high voltage charging mode and the inversion discharging mode, the system can also be in a photovoltaic charging mode, and the power battery is charged through the photovoltaic panel. The system 1000 may also be in any case in a low voltage discharge mode such that a battery or charging stake supplies power to a low voltage load device. The low-voltage load device may be a screen, a sound, a camera, etc. of the vehicle. In other words, after the vehicle is equipped with the system 1000, the integration of the internal circuits of the vehicle can be improved, thereby reducing the cost.

While certain specific embodiments of the utility model have been described in detail by way of example, it will be appreciated by those skilled in the art that the above examples are for illustration only and are not intended to limit the scope of the utility model. It will be appreciated by those skilled in the art that modifications may be made to the above embodiments without departing from the scope and spirit of the utility model. The scope of the utility model is defined by the appended claims.

Claims (10)

1. A charge control system, characterized in that the system comprises an alternating current charging circuit (100) and a photovoltaic charging circuit;

the alternating current charging circuit (100) comprises a power factor correction circuit (130); the photovoltaic charging circuit comprises a boost circuit (400), the boost circuit (400) multiplexing at least part of the switching devices of the power factor correction circuit (130);

the power factor correction circuit (130) is connected with an alternating current charging port of the system, and the voltage boosting circuit (400) is connected with a photovoltaic charging port of the system.

2. The system of claim 1, wherein the boost circuit (400) multiplexes at least a portion of the inductive devices of the power factor correction circuit (130).

3. The system of claim 2, wherein the power factor correction circuit (130) comprises a first leg (1), a second leg (2), a third leg (3), a first inductance (L1), a second inductance (L2);

the first end of the first inductor (L1) is connected with the bridge arm midpoint of the first bridge arm (1), the first end of the second inductor (L2) is connected with the bridge arm midpoint of the second bridge arm (2), the second ends of the first inductor (L1) and the second inductor (L2) are connected with the L-phase port of the alternating current charging port, and the bridge arm midpoint of the third bridge arm (3) is connected with the N-phase port of the alternating current charging port.

4. A system according to claim 3, characterized in that the boost circuit (400) multiplexes at least part of the switching devices and at least part of the inductive devices of the power factor correction circuit (130), comprising:

the boost circuit (400) multiplexes the first inductance (L1) and the first leg (1); or,

the boost circuit (400) multiplexes the second inductance (L2) and the second leg (2); or,

the boost circuit (400) multiplexes the first inductance (L1), the second inductance (L2), the first leg (1), and the second leg (2).

5. The system of claim 4, wherein the system further comprises a controller configured to control the controller,

the positive pole of the photovoltaic charging port is connected with the second ends of the first inductor (L1) and the second inductor (L2), and the negative pole of the photovoltaic charging port is connected with a bus of the power factor correction circuit (130).

6. The system of claim 5, wherein a first switch (S1) is provided between an L-phase port of the ac charging port and the power factor correction circuit (130), a second switch (S2) is provided between the boost circuit (400) and an anode of the photovoltaic charging port, and a third switch (S3) is provided at a cathode of the photovoltaic charging port.

7. The system of claim 5, wherein the ac charging circuit (100) further comprises a high voltage primary side conversion circuit (140), an isolation conversion circuit (120), and a high voltage secondary side conversion circuit (110);

the power factor correction circuit (130), the high-voltage primary side conversion circuit (140), the isolation conversion circuit (120) and the high-voltage secondary side conversion circuit (110) are sequentially connected, and the high-voltage secondary side conversion circuit (110) is connected with a battery port of the system.

8. The system of claim 6, wherein the system is configured to implement at least one of the following modes of operation under control of the control circuit:

an alternating-current charging mode, corresponding to which the first switch (S1) is closed, and the second switch (S2) and the third switch (S3) are open;

-an inversion discharge mode, corresponding to which the first switch (S1) is closed and the second switch (S2) and the third switch (S3) are open;

and a photovoltaic charging mode, corresponding to the photovoltaic charging mode, wherein the first switch (S1) is opened, and the second switch (S2) and the third switch (S3) are closed.

9. The system of claim 8, further comprising a low voltage secondary side conversion circuit (230); the low voltage secondary side conversion circuit (230) is coupled with the isolation conversion circuit (120) of the alternating current charging circuit (100);

the low voltage secondary side conversion circuit (230) is connected to a low voltage load port of the system.

10. A vehicle comprising a power battery, an electric motor, and a charge control system according to any one of claims 1-9;

the power battery is connected with a battery port of the charging control system.